545422509 has 24 divisors (see below), whose sum is σ = 835323840. Its totient is φ = 341755008.

The previous prime is 545422489. The next prime is 545422511. The reversal of 545422509 is 905224545.

It is not a de Polignac number, because 545422509 - 2⁹ = 545421997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545422519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133702 + ... + 137720.

It is an arithmetic number, because the mean of its divisors is an integer number (34805160).

Almost surely, 2^545422509 is an apocalyptic number.

It is an amenable number.

545422509 is a deficient number, since it is larger than the sum of its proper divisors (289901331).

545422509 is a wasteful number, since it uses less digits than its factorization.

545422509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4929 (or 4926 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 545422509 is about 23354.2824552586. The cubic root of 545422509 is about 817.0419441059.

The spelling of 545422509 in words is "five hundred forty-five million, four hundred twenty-two thousand, five hundred nine".